#include<stdio.h>
int f1(int val)
{
	int num=0;
	int *ptr=&num;
	if(val==0)
	{
		int val=5;
		ptr=&val;
	}
	return (*ptr+1);
}
int main(void)
{
	printf("hello world !\n");
	printf("%d",f1(1));
	exit(0);
}
